Highlights

The Epidemiological Bulletin is published by the Area of Health Surveillance and Disease Prevention and Control (HSD), Pan American Health Organization, Regional Office of the World Health Organization. Address: 525 Twenty-third Street, N.W., Washington, DC. 20037, U.S.A. Telephone: (202) 974.3855. Fax: (202) 974.3674. http://www.paho.org. The texts and the images can be reproduced freely provided that 1) the author/image is cited correctly; 2) the text is accompanied by the credit "Reprinted of the Epidemiological Bulletin of the Pan American Health Organization. Pan American Health Organization, Regional Office of the World Health Organization". 3) A copy of the printed matter is sent to the editor.

Some articles that appear in the Epidemiological Bulletin reflect the standpoints of the author and do not necessarily represent the official standpoint of PAHO/WHO.